ディシリオン二酸化炭素複合体:O-H結合によるCOの合成とプロトネーション
Yazhou Ding1,2, Jianying Zhang1,2, Yang Li1,2
1State Key Laboratory of Elemento-Organic Chemistry and College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China.
Journal of the American Chemical Society
|November 7, 2022
まとめ
研究者らは,第1の1,2-ジシリオン・ディカルボニル複合体を,ジリンと一酸化炭素を反応させ,合成した. この新しい複合体は,ジシラサイクロブテン誘導体とジオドジラネを生成する反応を起こします.
科学分野:
- オルガノシリコン化学
- 無機化学
- 協調化学
背景:
- ディシリネは,シリコン-シリコン三重結合を特徴とするアルキンのシリコン類である.
- 低価値の反応性シリコン種を安定化させることが,その化学的性質を研究するために不可欠です.
研究 の 目的:
- 第1の1,2-ジシリオンジカルボニル複合体を合成し,特徴づけること
- この新しい複合体の反応性を様々な反応剤で調べる
主な方法:
- 安定したディジリンと一酸化炭素の反応.
- 水解,メタノリシス,ヨドメタンとの反応.
- シングル・クリスタル・X線微分分析
- 密度関数理論 (DFT) の計算
主要な成果:
- 1,2-ジシリオンジカルボニル複合体 (NHB) の合成が成功しました.
- 水解/メタノリシスによるC−C結合とプロトン化が観察され,ジサイラサイクロブテンの誘導体が得られる.
- ヨドメタンによる酸化による1,2-ジオドジランの形成,COを放出する.
- X線 difraktionは 独特の1,2-dicarbonyl-disilane構造を確認しました
- DFTの計算では,シリコンのp-オービタルとCO π*のバックボンドが有意であることが明らかになった.
結論:
- 最初の1,2-ジシリオンジカルボニル複合体は合成され,特徴づけられました.
- この複合体は様々な反応性を示し,新しいシリコンを含む化合物へのアクセスを可能にします.
- 電子構造の計算は,複合体内の結合の洞察を提供します.
関連する概念動画
Lewis Structures of Molecular Compounds and Polyatomic Ions
35.1K
To draw Lewis structures for complicated molecules and molecular ions, it is helpful to follow a step-by-step procedure as outlined:
35.1K
Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide
10.7K
Alkenes are converted to 1,2-diols or glycols through a process called dihydroxylation. It involves the addition of two hydroxyl groups across the double bond with two different stereochemical approaches, namely anti and syn. Dihydroxylation using osmium tetroxide progresses with syn stereochemistry.
10.7K
Preparation of Diols and Pinacol Rearrangement
3.5K
Compounds bearing two hydroxyl groups are known as diols. When the hydroxyl groups are located on adjacent carbon atoms, the diols are called vicinal diols or glycols. Under acidic conditions, vicinal diols undergo a specific reaction called pinacol rearrangement.
The reaction begins with transferring a proton from the acid catalyst to one of the hydroxyl groups, producing an oxonium ion.
The reaction begins with transferring a proton from the acid catalyst to one of the hydroxyl groups, producing an oxonium ion.
3.5K
Oxidation of Alkenes: Anti Dihydroxylation with Peroxy Acids
6.1K
Diols are compounds with two hydroxyl groups. In addition to syn dihydroxylation, diols can also be synthesized through the process of anti dihydroxylation. The process involves treating an alkene with a peroxycarboxylic acid to form an epoxide. Epoxides are highly strained three-membered rings with oxygen and two carbons occupying the corners of an equilateral triangle. This step is followed by ring-opening of the epoxide in the presence of an aqueous acid to give a trans diol.
6.1K
Alkylation of β-Diester Enolates: Malonic Ester Synthesis
3.5K
Malonic ester synthesis is a method to obtain α substituted carboxylic acids from ꞵ-diesters such as diethyl malonate and alkyl halides.
3.5K
[4+2] Cycloaddition of Conjugated Dienes: Diels–Alder Reaction
10.4K
The Diels–Alder reaction is an example of a thermal pericyclic reaction between a conjugated diene and an alkene or alkyne, commonly referred to as a dienophile. The reaction involves a concerted movement of six π electrons, four from the diene and two from the dienophile, forming an unsaturated six-membered ring. As a result, these reactions are classified as [4+2] cycloadditions.
10.4K


![The Synthesis of [Sn10SiSiMe334]2- Using a Metastable SnI Halide Solution Synthesized via a Co-condensation Technique](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F54498.jpg&w=3840&q=50)